PI.FYI by Perfectly Imperfect is a social networking app available on iPhone. It combines elements of Letterboxd and Goodreads with a touch of Myspace, providing a platform to share, ask for recommendations, and organize content in lists. Users can customize their profiles thematically, follow friends, PI guests, and strangers, and explore content by category. Additionally, the app offers a unique feature where users can get profiled on their Substack newsletter, ensuring a diverse and engaging experience for users.

PI.FYI stands out by offering users the opportunity to discover something new each time they engage with the app, enhancing the social networking experience for those looking to connect over shared interests and recommendations.